Final answer:
The Hittorf-Crookes tube experiments led to the discovery of the electron, revealing that atoms contain small, negatively charged particles. Further developments from the cathode ray tube technology include the discovery of x-rays and the development of the oscilloscope.
Step-by-step explanation:
The experiment with a Hittorf-Crookes tube, also known as a cathode ray tube, was instrumental in the discovery of the electron. In 1897, the English physicist J.J. Thomson used the cathode ray tube to demonstrate that cathode rays were composed of previously unknown negatively charged particles, which he called corpuscles and are now known as electrons. Thomson's work contested the prevailing theories of the time which considered atoms to be indivisible; instead, his work showed that atoms contained these small, charged components.
Further use of Crookes tube by other scientists led to additional groundbreaking discoveries. Wilhelm Roentgen's work with a modified system resulted in the discovery of x-rays in 1895, and later, Karl Ferdinand Braun's development of the oscilloscope in 1897. The flexibility and the range of experiments facilitated by the cathode ray tube have had a significant impact on the advancement of modern science and technology.